Added new cmake library search functions.

This commit is contained in:
Armin Novak 2014-05-23 13:06:03 +02:00
parent 3c2779542d
commit 309f19f653
2 changed files with 159 additions and 0 deletions

43
cmake/FindGlib.cmake Normal file
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# - Try to find Glib-2.0 (with gobject)
# Once done, this will define
#
# Glib_FOUND - system has Glib
# Glib_INCLUDE_DIRS - the Glib include directories
# Glib_LIBRARIES - link these to use Glib
#
# GLIB_ROOT_DIR - Primary search directory
include(LibFindMacros)
# Use pkg-config to get hints about paths
libfind_pkg_check_modules(Glib_PKGCONF glib-2.0)
# Main include dir
find_path(Glib_INCLUDE_DIR
NAMES glib.h
PATHS $ {Glib_PKGCONF_INCLUDE_DIRS} $ {GLIB_ROOT_DIR}
PATH_SUFFIXES glib-2.0
)
# Finally the library itself
find_library(Glib_LIBRARY
NAMES glib-2.0 gstreamer_android
PATHS $ {Glib_PKGCONF_LIBRARY_DIRS} $ {GLIB_ROOT_DIR}
)
find_library(Gobject_LIBRARY
NAMES gobject-2.0 gstreamer_android
PATHS $ {Glib_PKGCONF_LIBRARY_DIRS} $ {GLIB_ROOT_DIR}
)
# Glib-related libraries also use a separate config header, which is in lib dir
find_path(GlibConfig_INCLUDE_DIR
NAMES glibconfig.h
PATHS $ {Glib_PKGCONF_INCLUDE_DIRS} /usr $ {GLIB_ROOT_DIR}
PATH_SUFFIXES lib/glib-2.0/include glib-2.0/include
)
# Set the include dir variables and the libraries and let libfind_process do the rest.
# NOTE: Singular variables for this library, plural for libraries this this lib depends on.
set(Glib_PROCESS_INCLUDES Glib_INCLUDE_DIR GlibConfig_INCLUDE_DIR)
set(Glib_PROCESS_LIBS Glib_LIBRARY Gobject_LIBRARY)
libfind_process(Glib)

116
cmake/LibFindMacros.cmake Normal file
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# Works the same as find_package, but forwards the "REQUIRED" and "QUIET" arguments
# used for the current package. For this to work, the first parameter must be the
# prefix of the current package, then the prefix of the new package etc, which are
# passed to find_package.
macro(libfind_package PREFIX)
set(LIBFIND_PACKAGE_ARGS $ {ARGN})
if($ {PREFIX} _FIND_QUIETLY)
set(LIBFIND_PACKAGE_ARGS $ {LIBFIND_PACKAGE_ARGS} QUIET)
endif($ {PREFIX} _FIND_QUIETLY)
if($ {PREFIX} _FIND_REQUIRED)
set(LIBFIND_PACKAGE_ARGS $ {LIBFIND_PACKAGE_ARGS} REQUIRED)
endif($ {PREFIX} _FIND_REQUIRED)
find_package($ {LIBFIND_PACKAGE_ARGS})
endmacro(libfind_package)
# CMake developers made the UsePkgConfig system deprecated in the same release (2.6)
# where they added pkg_check_modules. Consequently I need to support both in my scripts
# to avoid those deprecated warnings. Here's a helper that does just that.
# Works identically to pkg_check_modules, except that no checks are needed prior to use.
macro (libfind_pkg_check_modules PREFIX PKGNAME)
if (${CMAKE_MAJOR_VERSION} EQUAL 2 AND ${CMAKE_MINOR_VERSION} EQUAL 4)
include(UsePkgConfig)
pkgconfig(${PKGNAME} ${PREFIX}_INCLUDE_DIRS ${PREFIX}_LIBRARY_DIRS ${PREFIX}_LDFLAGS ${PREFIX}_CFLAGS)
else (${CMAKE_MAJOR_VERSION} EQUAL 2 AND ${CMAKE_MINOR_VERSION} EQUAL 4)
find_package(PkgConfig)
if (PKG_CONFIG_FOUND)
pkg_check_modules(${PREFIX} ${PKGNAME})
endif (PKG_CONFIG_FOUND)
endif (${CMAKE_MAJOR_VERSION} EQUAL 2 AND ${CMAKE_MINOR_VERSION} EQUAL 4)
endmacro (libfind_pkg_check_modules)
# Do the final processing once the paths have been detected.
# If include dirs are needed, ${PREFIX}_PROCESS_INCLUDES should be set to contain
# all the variables, each of which contain one include directory.
# Ditto for ${PREFIX}_PROCESS_LIBS and library files.
# Will set ${PREFIX}_FOUND, ${PREFIX}_INCLUDE_DIRS and ${PREFIX}_LIBRARIES.
# Also handles errors in case library detection was required, etc.
macro (libfind_process PREFIX)
# Skip processing if already processed during this run
if (NOT ${PREFIX}_FOUND)
# Start with the assumption that the library was found
set (${PREFIX}_FOUND TRUE)
# Process all includes and set _FOUND to false if any are missing
foreach (i ${${PREFIX}_PROCESS_INCLUDES})
if (${i})
set (${PREFIX}_INCLUDE_DIRS ${${PREFIX}_INCLUDE_DIRS} ${${i}})
mark_as_advanced(${i})
else (${i})
set (${PREFIX}_FOUND FALSE)
endif (${i})
endforeach (i)
# Process all libraries and set _FOUND to false if any are missing
foreach (i ${${PREFIX}_PROCESS_LIBS})
if (${i})
set (${PREFIX}_LIBRARIES ${${PREFIX}_LIBRARIES} ${${i}})
mark_as_advanced(${i})
else (${i})
set (${PREFIX}_FOUND FALSE)
endif (${i})
endforeach (i)
# Print message and/or exit on fatal error
if (${PREFIX}_FOUND)
if (NOT ${PREFIX}_FIND_QUIETLY)
message (STATUS "Found ${PREFIX} ${${PREFIX}_VERSION}")
endif (NOT ${PREFIX}_FIND_QUIETLY)
else (${PREFIX}_FOUND)
if (${PREFIX}_FIND_REQUIRED)
foreach (i ${${PREFIX}_PROCESS_INCLUDES} ${${PREFIX}_PROCESS_LIBS})
message("${i}=${${i}}")
endforeach (i)
message (FATAL_ERROR "Required library ${PREFIX} NOT FOUND.\nInstall the library (dev version) and try again. If the library is already installed, use ccmake to set the missing variables manually.")
endif (${PREFIX}_FIND_REQUIRED)
endif (${PREFIX}_FOUND)
endif (NOT ${PREFIX}_FOUND)
endmacro (libfind_process)
macro(libfind_library PREFIX basename)
set(TMP "")
if(MSVC80)
set(TMP -vc80)
endif(MSVC80)
if(MSVC90)
set(TMP -vc90)
endif(MSVC90)
set(${PREFIX}_LIBNAMES ${basename}${TMP})
if(${ARGC} GREATER 2)
set(${PREFIX}_LIBNAMES ${basename}${TMP}-${ARGV2})
string(REGEX REPLACE "\\." "_" TMP ${${PREFIX}_LIBNAMES})
set(${PREFIX}_LIBNAMES ${${PREFIX}_LIBNAMES} ${TMP})
endif(${ARGC} GREATER 2)
find_library(${PREFIX}_LIBRARY
NAMES ${${PREFIX}_LIBNAMES}
PATHS ${${PREFIX}_PKGCONF_LIBRARY_DIRS})
endmacro(libfind_library)
SET(THREE_PART_VERSION_REGEX "[0-9]+\\.[0-9]+\\.[0-9]+")
# Breaks up a string in the form n1.n2.n3 into three parts and stores
# them in major, minor, and patch. version should be a value, not a
# variable, while major, minor and patch should be variables.
MACRO(THREE_PART_VERSION_TO_VARS version major minor patch)
IF(${version} MATCHES ${THREE_PART_VERSION_REGEX})
STRING(REPLACE "." " " version_list ${version})
SEPARATE_ARGUMENTS(version_list)
LIST(GET version_list 0 ${major})
LIST(GET version_list 1 ${minor})
LIST(GET version_list 2 ${patch})
ELSE(${version} MATCHES ${THREE_PART_VERSION_REGEX})
MESSAGE("MACRO(THREE_PART_VERSION_TO_VARS ${version} ${major} ${minor} ${patch}")
MESSAGE(FATAL_ERROR "Problem parsing version string, I can't parse it properly.")
ENDIF(${version} MATCHES ${THREE_PART_VERSION_REGEX})
ENDMACRO(THREE_PART_VERSION_TO_VARS)